Pontiac GTO 1967 suspension

Dedek963

The European guy
89
1
8
Prague
Hi all :)
As told in the previous topic I own Pontiac GTO 1967.
One of the things I would like to make better on my car is the suspension.

One of the possibilities is to install BMR suspension level 2.
https://www.bmrsuspension.com/?page=products&productid=78

Do you have some experience with this kit?

The negatives for me are lowering the front by 1 inch...

I would like to keep the vehicle optically as original as it can be.

Would you have another suggestion?
Thank you

 

Dedek963

The European guy
89
1
8
Prague

melsg5

Staff member
SUSTAINING MEMBER
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any complete package you buy will lower the height of the vehicle due to the springs. If your current springs are still keeping the car at the correct height you can buy individual components to improve handling, so skip the packages.
Install a larger front sway bar and install a rear sway bar.
https://www.hotchkis.net/product/19...om-hotchkis-sport-suspension/?mk=&yr=&md=&sm=
https://www.hotchkis.net/product/19...om-hotchkis-sport-suspension/?mk=&yr=&md=&sm=
replace the upper and lower control arms, shocks, tie rod sleeves etc. all at this link
https://www.hotchkis.net/classic-muscle-car/?subcat=1967 GM A-Body
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Dedek963

The European guy
89
1
8
Prague
I will stick with the PMD 15" to keep the original look.
Maybe I will change the tyres from 215 to 235.
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melsg5

Staff member
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That is an incredibly fast mechanic, is he available?
Great documentation of the work.
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Dedek963

The European guy
89
1
8
Prague
New brake calipers from Wilwood.
The discs are going to be custom made, to use every singe 0,00x inch of the 15" rims. Centers of the discs are going to be from magnesium to reduce the unsprung mass. (pictures will follow later)

IMG-20191029-WA0001.jpg
 

melsg5

Staff member
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Any idea if the UMI arms save much weight compared to stock?
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Dedek963

The European guy
89
1
8
Prague
Upper arms are definitely much lighter.
But based on the feeling It is definitely lighter than the original.
My guess is about 30%.

Lower arms are a bit heavier.
Unfortunately it is already on the frame, so I can not weight it.

Despite of the weight the suspension geometry is the biggest difference.
You can see it on the pictures.
 
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Dedek963

The European guy
89
1
8
Prague
Some days ago I posted my brand new Wilwood brake calipers.
According to my brake specialist is this type too weak for the weight/power ratio of my GTO/art of use of the GTO(my driving style).
At the very end the brake calipers will be SUBARU WRX RA.
The brake discs diameter is going to be 310 mm (12.2 inch)
(the originals are 266.7 mm (10.5 inch)
So it looks like pretty nice upgrade.
(Still on 15" PMD rims)
There will be also another change from the original.
The wheel hub will be made from light alloy and the brake disc will be mounted onto it.
Due to this change the total track width will be bigger by 12 milimeter.
The same increase of width is to be made at the rear axle.
 
Last edited:
44
1
8
Some days ago I posted my brand new Wilwood brake calipers.
According to my brake specialist is this type too weak for the weight/power ratio of my GTO/art of use of the GTO(my driving style).
At the very end the brake calipers will be SUBARU WRX RA.
The brake discs diameter is going to be 310 mm (12.2 inch)
(the originals are 266.7 mm (10.5 inch)
So it looks like pretty nice upgrade.
(Still on 15" PMD rims)
There will be also another change from the original.
The wheel hub will be made from light alloy and the brake disc will be mounted onto it.
Due to this change the total track width will be bigger by 12 milimeter.
The same increase of width is to be made at the rear axle.
Been told 81 or so Firebird front anti-sway bar makes an excellent inexpensive upgrade
 
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